The Federal-Mogul 14 R-4 CIU2 (Z 215) Heavy Duty Series Dual Iridium Spark plug is designed to outperform standard plugs.
This High Quality plug is made in GERMANY and is an ideal alternative for Stationary Gas Powered Engines and will provide exceptional performance even in high temperature and Lean Burn Applications.
These plug are suitable in Engines utilizing a 14mm thread, 3/4" Reach spark plug carrier/Head and can be used in place of some of the below Part numbers:
CHAMPION: RN79G, RN79G1, RN79PYP17, RN79PYP25
BOSCH: 7311, 7315
CAT: 104-3170, 4W-2256, 128-6238, 2N2839
CUMMINS: 4090121, 897624
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